rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P25514/1:b..l (detected by 0, t=10505 jiffies, g=340181, q=682 ncpus=2) task:syz.1.17150 state:R running task stack:24664 pid:25514 ppid:19448 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5246 [inline] __schedule+0x107f/0x4030 kernel/sched/core.c:6563 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6732 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6756 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34 __local_bh_enable_ip+0x147/0x1c0 kernel/softirq.c:428 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:861 [inline] __dev_queue_xmit+0x1d84/0x3810 net/core/dev.c:4411 dev_queue_xmit include/linux/netdevice.h:3053 [inline] __bpf_tx_skb net/core/filter.c:2143 [inline] __bpf_redirect_common net/core/filter.c:2191 [inline] __bpf_redirect+0xb65/0x1110 net/core/filter.c:2198 ____bpf_clone_redirect net/core/filter.c:2482 [inline] bpf_clone_redirect+0x311/0x4a0 net/core/filter.c:2445 bpf_prog_ddd136b54ea55eb4+0x19/0x1d bpf_dispatcher_nop_func include/linux/bpf.h:1012 [inline] __bpf_prog_run include/linux/filter.h:608 [inline] bpf_prog_run include/linux/filter.h:615 [inline] bpf_test_run+0x2b6/0x830 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0xdaf/0x18e0 net/bpf/test_run.c:1222 bpf_prog_test_run+0x31c/0x390 kernel/bpf/syscall.c:3695 __sys_bpf+0x62b/0x780 kernel/bpf/syscall.c:5050 __do_sys_bpf kernel/bpf/syscall.c:5136 [inline] __se_sys_bpf kernel/bpf/syscall.c:5134 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5134 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f240bf9e0d9 RSP: 002b:00007f240ce7a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f240c225fa0 RCX: 00007f240bf9e0d9 RDX: 0000000000000050 RSI: 00002000000003c0 RDI: 000000000000000a RBP: 00007f240c035024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f240c226038 R14: 00007f240c225fa0 R15: 00007fffab363ef8